Home rebarreling a Rem 700?

I have a Rem 700 jewel trigger 243 with probably burned out 22 inch barrel. If I was to buy a barrel and a 243 head space gauge would this be pretty easy to do? I had gun smiths do my customs over the years. But this seems pretty basic. What is the best device to hold the gun and unthread the barrel?

Please don't laugh!

I considered just selling it, but for minor money I could make it something fun again with a 28 inch or so barrel with 243, 256. 264. 277, or 284 -08

Budlight
Give Jim Briggs a call. He is Northland Shooters Supply: 763-682-4296. He has a system to Headspace the Rem like a Savage rifle and it can be done at home. He can also help you with the right parts to get the old barrel off.